EJ
Eugene Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Warren-County, Illinois
Our Model Tree links this Eugene Johnson across the 1920, 1930 and 1940 US Censuses in Warren-County, Illinois (XGBoost, ~Confirmed), with identified parents Fred & Eva — first a son (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Illinois |
| Surname | Johnson |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lenox Twp |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 800 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Lenox Twp |
| Est. Birth Year | ~1911 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Eugene | Age | Birth yr |
|---|---|---|---|---|
| Della Johnson | Daughter | — | 21 | ~1919 |
| Fred Johnson | Head | — | 64 | ~1876 |
| Eugene Johnson | Son | — | 29 | ~1911 |
| Lyle Johnson | Son | — | 18 | ~1922 |
| Eva Johnson | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Warren, Illinois
Son, age 9
Warren, Illinois · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Warren, Illinois
Son, age 19
Warren, Illinois · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Stock & Grain |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Warren-County, Illinois
Son, age 29
Warren-County, Illinois · implied b. ~1911 — 5 household members
| Surname | Johnson |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lenox Twp |
| 1935 Residence (County) | Warren |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 800 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Eugene Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Johnson (~0.92 confidence) and mother Eva Johnson (~0.92 confidence) and mother Eva Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Johnson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Eva Johnson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Eva Johnson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Eugene Johnson
Son · 1940 · age 29 · b. ~1911 · Illinois
★ You are viewing this record
Sibling
Della Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lyle Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Warren-County, Illinois
Open full size
1940 US Federal Census — Warren-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00901-00169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Johnson | 64 | Head | Farmer | Vermont |
| 2 | Eva Johnson | 52 | Wife | — | Illinois |
| 3 | Eugene Johnson THIS PERSON | 29 | Son | Farmer | Illinois |
| 4 | Della Mae Johnson | 21 | Daughter | Stenographer | Illinois |
| 5 | Lyle Johnson | 18 | Son | Farm Laborer | Illinois |
| 6 | Laura Moore | 57 | Head | — | Illinois |
| 7 | Robert Moore | 22 | Son | Farmer | Illinois |
| 8 | Clarence Greenstreet | 19 | Hired Man | Farm Laborer | Illinois |
| 9 | Mamie Smith | 17 | Hired Girl | Housework | Illinois |
| 10 | Lewis Foster | 26 | Head | Farmer | Iowa |
| 11 | Evelyn Foster | 26 | Wife | — | Illinois |
| 12 | Leil Lewis | 73 | Head | Farmer | Illinois |
| 13 | Frankie Lewis | 61 | Wife | — | Michigan |
| 14 | Harland Waddell | 29 | Head | Farmer | Iowa |
| 15 | Kathryn Waddell | 26 | Wife | — | Illinois |
| 16 | Ronald Waddell | 3 | Son | — | Illinois |
| 17 | Jane Lewis | 66 | Landlady | — | Illinois |
| 18 | Effie Lewis | 70 | Head | — | Illinois |
| 19 | George Lewis | 23 | Grandson | Farm Laborer | Illinois |
| 20 | Elsa Smith | 61 | Head | Farm Manager | Illinois |
| 21 | Dale Smith | 20 | Nephew | Farm Laborer | Illinois |
| 22 | Harold Strand | 35 | Head | Farmer | Illinois |
| 23 | Evelyn Strand | 31 | Wife | — | Illinois |
| 24 | Charles Strand | 3 | Son | — | Illinois |
| 25 | Charles Brown | 35 | Hired Man | Farm Laborer | Kentucky |
| 26 | Burnill Sprout | 29 | Head | Farmer | Illinois |
| 27 | Florence Sprout | 26 | Wife | — | Illinois |
| 28 | Willedene Sprout | 6 | Daughter | — | Illinois |
| 29 | Joan Sprout | 5 | Daughter | — | Illinois |
| 30 | Karoline Sprout | 4 | Daughter | — | Illinois |
| 31 | Allan Sprout | 2 | Son | — | Illinois |
| 32 | Wayne Day | 24 | Head | Farm Laborer | Illinois |
| 33 | Lulu Day | 23 | Wife | — | Illinois |
| 34 | Patricia Day | 0 | Daughter | — | Illinois |
| 35 | Harry Jewell | 60 | Head | Farmer | Illinois |
| 36 | Gertrude Jewell | 57 | Wife | — | Illinois |
| 37 | Richard Jewell | 27 | Son | Farmer | Illinois |
| 38 | Paul Jewell | 17 | Son | — | Illinois |
| 39 | Edith Jessen | 54 | Housekeeper | Housework | Indiana |
| 40 | James Danewood | 40 | Head | Farm Laborer | Virginia |
Related Census Records
Pedigree Summary
Eugene + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)